1
|
Sanz-Muñoz I, López-Mongil R, Sánchez-Martínez J, Sánchez-de Prada L, González MDG, Pérez-SanJose D, Rojo-Rello S, Hernán-García C, Fernández-Espinilla V, de Lejarazu-Leonardo RO, Castrodeza-Sanz J, Eiros JM. Evolution of antibody profiles against SARS-CoV-2 in experienced and naïve vaccinated elderly people. Front Immunol 2023; 14:1128302. [PMID: 36911673 PMCID: PMC9992205 DOI: 10.3389/fimmu.2023.1128302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/08/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction The third dose of the COVID-19 vaccine is especially necessary in people over 65 years of age due to their lower immune response. Methods We designed a multicentre, prospective observational study including 98 people ≤65 years old who lived in two nursing homes in Valladolid, Spain. One of the groups had previous experience with SARS-CoV-2 (n=68;69.4%) and the other was naïve (n=30;30.6%). We evaluated the response to the three doses of the Comirnaty vaccine and the dynamics of antibodies during 5 consecutive serum samplings: 2 after the first two doses of vaccination, one three months after the first dose, another at 6 months and the last one month after the third dose. IgG antibodies against SARS-CoV-2 S1, RBD and N antigens were analysed. Results Both groups increased the level of Abs against S1 and RBD, but the experienced group showed a 130-fold higher humoral response due to hybrid immunisation (infection+vaccination). The response to vaccination with Comirnaty against COVID-19 was higher in those ≤65 years with previous experience than those who were naïve. However, the amount of antibodies against S1 and RBD equalised at 6 months. After the third dose, both groups raised the amount of antibodies to a similar level. The reinfections suggested by the analysis of antibodies against N were frequent in both groups. Discussion The third dose showed a clear benefit for elderly people, with the reinforcement of the antibody levels after the decline suffered after six months of the first two doses.
Collapse
Affiliation(s)
- Iván Sanz-Muñoz
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Instituto de Estudios de Ciencias de la Salud de Castilla y León, (ICSCYL), Soria, Spain
| | | | - Javier Sánchez-Martínez
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Instituto de Estudios de Ciencias de la Salud de Castilla y León, (ICSCYL), Soria, Spain
| | - Laura Sánchez-de Prada
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Marta Domínguez-Gil González
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Microbiology Unit, Hospital Universitario Río Hortega de Valladolid, Valladolid, Spain
| | - Diana Pérez-SanJose
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Silvia Rojo-Rello
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Microbiology Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Cristina Hernán-García
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Preventive Medicine and Public Health Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - Virginia Fernández-Espinilla
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Preventive Medicine and Public Health Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | | | - Javier Castrodeza-Sanz
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Preventive Medicine and Public Health Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - José María Eiros
- National Influenza Centre, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.,Microbiology Unit, Hospital Universitario Río Hortega de Valladolid, Valladolid, Spain.,Microbiology Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| |
Collapse
|